前言

本文主要介紹一些調(diào)試相關(guān)的操作

• **debug **
  會(huì)打印所有的訂閱，時(shí)間 和 disposals

example("debug") {
    let disposeBag = DisposeBag()
    var count = 1
    
    let sequenceThatErrors = Observable<String>.create { observer in
        observer.onNext("??")
        observer.onNext("??")
        observer.onNext("??")
        
        if count < 5 {
            observer.onError(TestError.test)
            print("Error encountered")
            count += 1
        }
        
        observer.onNext("??")
        observer.onNext("??")
        observer.onNext("??")
        observer.onCompleted()
        
        return Disposables.create()
    }
    
    sequenceThatErrors
        .retry(3)
        .debug()
        .subscribe(onNext: { print($0) })
        .disposed(by: disposeBag)
}

// 控制臺(tái)打印的結(jié)果：
--- debug example ---
2017-06-02 15:20:10.104: ViewController.swift:64 (viewDidLoad()) -> subscribed
2017-06-02 15:20:10.112: ViewController.swift:64 (viewDidLoad()) -> Event next(??)
??
2017-06-02 15:20:10.112: ViewController.swift:64 (viewDidLoad()) -> Event next(??)
??
2017-06-02 15:20:10.113: ViewController.swift:64 (viewDidLoad()) -> Event next(??)
??
Error encountered
2017-06-02 15:20:10.115: ViewController.swift:64 (viewDidLoad()) -> Event next(??)
??
2017-06-02 15:20:10.115: ViewController.swift:64 (viewDidLoad()) -> Event next(??)
??
2017-06-02 15:20:10.115: ViewController.swift:64 (viewDidLoad()) -> Event next(??)
??
Error encountered
2017-06-02 15:20:10.115: ViewController.swift:64 (viewDidLoad()) -> Event next(??)
??
2017-06-02 15:20:10.116: ViewController.swift:64 (viewDidLoad()) -> Event next(??)
??
2017-06-02 15:20:10.116: ViewController.swift:64 (viewDidLoad()) -> Event next(??)
??
Error encountered
2017-06-02 15:20:10.120: ViewController.swift:64 (viewDidLoad()) -> Event error(test)
2017-06-02 15:20:10.120: ViewController.swift:64 (viewDidLoad()) -> isDisposed

• RxSwift.Resources.total
  提供所有Rx資源分配的計(jì)數(shù)啥刻，用于開(kāi)發(fā)期間檢測(cè)泄漏
  ** 默認(rèn)使用RxSwift.Resources.total會(huì)報(bào)錯(cuò),需要修改pod文件巍沙，修改完畢之后重新pod ,然后編譯就可以了**

target 'AppTarget' do
pod 'RxSwift'
end

post_install do |installer|
    installer.pods_project.targets.each do |target|
        if target.name == 'RxSwift'
            target.build_configurations.each do |config|
                if config.name == 'Debug'
                    config.build_settings['OTHER_SWIFT_FLAGS'] ||= ['-D', 'TRACE_RESOURCES']
                end
            end
        end
    end
end

事例程序

example("RxSwift.Resources.total") {
    print(RxSwift.Resources.total)
    
    let disposeBag = DisposeBag()
    
    print(RxSwift.Resources.total)
    
    let variable = Variable("??")
    
    let subscription1 = variable.asObservable().subscribe(onNext: { print($0) })
    
    print(RxSwift.Resources.total)
    
    let subscription2 = variable.asObservable().subscribe(onNext: { print($0) })
    
    print(RxSwift.Resources.total)
    
    subscription1.dispose()
    
    print(RxSwift.Resources.total)
    
    subscription2.dispose()
    
    print(RxSwift.Resources.total)
}
  
// 控制臺(tái)打印的結(jié)果：
--- RxSwift.Resources.total example ---
0
2
??
8
??
10
9
8